D h fleming



Sept. 25, 1934. D. H. FLEMING 19,324

MACHINE FOR MAKING STEREOTYPE MATRICES Original Filed May 10, 1952 8 Sheets-Sheet l FIG. '1

INVENTOR Ddw a Fleming ATTORNEY D. H. FLEMING Re. 19,324

a She ets-Sh eet 2 R mmg Sept. 25, 1934.

' MACHINE FOR MAKING STEREOTYPE MATRICES Original Filed May 10, 1932 INVENTO David b. He

BY I, ATTORNEY Sept. 25, 1934. D. H. FLEMING MACHINE FOR MAKING STEREOTYPE MATRICES Original Filed May 10, 1932 8 Sheets-Sheet 5 lNV-ENTOR Dav/a F/emmg ATTORNEY D. H. FLEMING Re. 19,324

MACHINE-1 0R MAKING- STEREOTYPE MATRICES Original Filed May 10 III/II 55, I 0% r I ATTORNEY Sept. 25, 1934.

Sept. 25, 1934. D. H. FLEMING 19,324

MACHINE FOR MAKING STEREOTYPE MATRICES Original Filed May l0, 1932 8 Sheets-Sheet 5 FIG. 5

INVENTOR Dav/HMF/emmg" I Was ATTORNEY D. H. FLEMING Re. 19,324

Sept. 25, 1934.

' MACHINE FO R MAKINGSTEREOTYPE MATRICES Original Filed May 10, .1932 8 Sheets-Sheet 6 INVENTOR Da v/a fl.- F/emmg ATTORNEY Sept. 25, 1934. D. H. FLEMING Re. 19,324

MACHINE FOR MAKING STEREOTYPE MATRICES 7 Original Filed May 10, 1932 8 Sheets-Sheet 7 FIG. 9

, ATTORNEY p 1934- D. H. FLEMING Re. 19,324

MACHINE FOR MAKING STEREOTYPE MATRICES Original Filed May 10, 952 a Shets-Sheei s FIG. 10

IO Iv INVENTOB Dal/m F/emmg ATTORNEY Reissuecl Sept. 25, 1934 U N I TE D STA TE 8.

Prrlrs.1-rr OFFICE MACHINE FOR MAKING STEREOTYPE MATRICES Original. No. 1,914,497., dated- June 20,1933, Serial No. 610,397, May 10, 1932. Application for reissue June 19', 1934, Serial No. 731,385

45 Claims.

The invention relates to a mechanical matriximprinting press, more particularly of the type wherein provision is made for releasing slightlythe pressure of the press head duringv the drying period of the matrix, as by backing off the said. press head from the matrix.

An object of the invention is to provide a ma:- chine for making stereotype matrices, having means for adjusting the degree of pressure exerted by the press head or platen.

Another object of the invention is to. provide a machine for making stereotype matrices, having means whereby travel of the press head or platen may be arrested at a position which affords the desired degree of pressure.

Yet another object of the invention is to provide improved means for presenting a. form and matrix stock between the jaws of thepress. 1

Still another object of the invention. is the pro-- 20 vision of improved heating means: for drying the matrix while it is subjected to pressure-between: the jaws of the press.

A further object of the invention is to provide a machine for making stereotype matrices, hav-- ing means to effect a preliminary drying of theform.

Yet a further object. of the invention-isthe-provision of improved mounting meansfor the heating units whereby they are accessible; and may be readily replaced without dismantling a. substantial portion of the-machine. I

In-v carrying out the invention, a press head or platen member is arranged to be-reciprocated toward and away from abed plate or heated stationary platen for the form and mat, provision being made whereby the degree of pressure ex:-

erted' by the head: thereon maybe adjustedX toithe desired degree. This may be effected by adjust-- ment of a crank pin in the driving mechanism. for the head or by an adjustment of the coactmg pressuresurface of the head itself. In order to present the formand: mat between the jaws:

of the press, a support. member onca-rriage is pro-- vided therefor which is mountedias upon rollers, upon a support or tablelocated in; front of: the pressure-exerting elements of themachine.

A further supporting table may also. be provided' with heating elements topreliminarily heat the form to the desired degree, the same being then moved forwardly by means of the carriage over the supporting rollers and between. the platens of the press portion of the machine. Thecarriage is there received also upon rollers which project through longitudinal slots of the bed. plate of the press and are carried by the reciprocable head or platenbearing elements thereof so that as. the latter are depressed to exertpressure upon the mat, the press rollers. will be correspondingly depressed below the surface of the bedplate which then alone supports the form and 6a mat .foraction upon said mat by the movable presshead or platen. 1 7

Provision isalsomadefor heating thisbed plate and the arrangement is such, furthermore,. that it is not necessary manually to remove the bed plate from its support when replacement of a heating; unit or units is required. The novel. arrangement, furthermore, contemplatesmeans for mechanically separating the actual. bed. plate or platen from its support to admit of accessto. a 70. heating unit which may bethen conveniently slid out as a whole from the support.

The nature of. the invention, however, will best be understood when described in connection. with the accompanying drawings, in. which;

Fig. 1 is a plan view of. the novel press with, portions broken. away, and. portions in horizontal, section.

Fig. 2 is a. fragmentary transverse vertical section thereof and. taken on the line 22,.Fig. 1,of the drawings.

Fig. 3 is a longitudinal section taken on. the line 33, Fig. 2 of the drawings, and looking. in the direction of the arrows.

Fig. 4 is an enlarged. detail vertical section. taken on the line 4-4, Fig. 3 of the drawings.

Fig-.- 5 is a vertical section. taken on the line 55, Fig. 1 of the drawings. and looking in the direction of the arrows.

Fig. 6 is a fragmentary front elevation, and Fig. 7 is a fragmentary end. elevation of a gear wheel for carrying the operating cams.

Fig. 8.is. a part longitudinal section and eleva-. tion of a, modification in the means for adjusting the amount of. pressure exerted. by the press in its operation.

Fig. 9 is a fragmentary front elevationalviem. showing the arrangement of the heating units. and the means provided to permit access to the units, I

Fig. 10 is a fragmentary longitudinal section of the carriage support for-the form-and stock or mat. r

Fig. 11 is a detailelevation of the brake mem-.: ber associated with the driven clutch element 01; a clutch device included-in the driving train.

Referring to the drawings, 20 designatesa driving shaft for the machine and: is operated from. a suitable source or power (not shown). shaft drives. a sprocket wheel 21 which, through.

a chain 22, drives a further sprocket 23 on the clutch shaft 24. A worm 25 on worm shaft 25 engages with the worm wheel 26 to rotate a shaft 27; and a clutch embodying the halves 28 and 29 is included between the driven sprocket 23 and the worm 25 of worm shaft 25.

The shaft 27 carries a pair of pinlons 30 and 31 meshing with respective spur gears 32 and. 33 for operating the press'head or platen 34 through intermediate mechanism. This head is mountedfor reciprocation with a pair of slides 35 mounted in opposite sides ,of the machine frame and is reciprocated through a toggle device embodying the arm 36 and the arm 37 which are pivoted to each other at 38. Arm 3'? constitutes one arm of a bell crankoscillatable about the pivot 39 and having the other and'forked arm 40. The tines of this arm 46 are adapted to engage with a crank pin 41 secured between the juxtaposed faces of the gear wheels 32 and 33 for oscillating the said arm and correspondingly actuating the toggle device in effecting reciprocation of the press head 34.

The dotted position of the crank pin 41, Fig. 2, indicates the position for maximum throw of the toggle or maximum pressure exerted by the head, and this pressure may be varied, for example, by providing the faces of the gear wheels 32 and 33 with slots 42 in which the crank pin 41 may be adjusted to correspondingly vary the throw of the toggle.

Or, reference being had to Fig. 8 of the drawings, the head 45 may be operated with fixed position crank pin and its effective pressurevaried through vertical adjustment of the engaging surface 46 of platen 4'7 which is in the nature of a movably mounted slide adapted for vertical adjustment in the body of the head 45, as in ways 48, and positioned through the engagement of a half threaded portion 49 thereof with 'a screw member 50 rotatably mounted in the head and operated through the hand wheel 51. By either of these expedients, a simple means is provided for securing the desired pressure upon the mat as it is not always feasible to finally set the machine for the requisite pressure atthe time of shipment.

In accordance with the invention, the head 34 after having made the desired impression in the mat is to be backed off slightly during the drying period, and to this end provision must be made for interrupting the action of the crank pin 41 and requires that the press head be instantaneously and accurately stopped at a position relatively to the bed plate or lower platen 5a with which it cooperates. This maybe effected by disengaging the clutch halves 28 and 29 which is accomplished, for example, by means of a rocker arm having the nose 56 adapted for engagement with the cam roller 5'7. The latter is adjustably carried on the face of a gear wheel 32 or 33 as through the plate 58 secured thereto bymeans of the studs 59 and 60 fitting in corresponding slots of the plate. I

By virtue of this. adjustment, it is possible to time the cessation of the backing-oh action of the head and thus secure the desired degree of pressure upon the matrix during the drying period. 1

Roller 57 iscarried-at the outer end of an arm 61 pivoted to the plate 58 and is urged in the direction of rotation of a gear 32 or 33 by a spring 61'. An adjustable stop 62 limits its movement in this direction while its movement in the opposite direction is limited by an adjustable stop 63, both stops being mounted on the plate 58. Thus, as the gear wheel rotates, roller 57 will eventually engage with the nose 56, being forced toward the stop 63 and then raising the arm 55. In so doing, the shaft 65 to which this arm is secured will be correspondingly rocked and will, through A the intermediate connecting mechanism, throw the driven clutch half 29 for disengagement with its driving clutch half 28, as is well understood, and'thus interrupt the action of the press head at the position affording the desired degree of pressure.

As it is highly desirable that this action shall take place instantaneously and that no overrunning of the press head motion shall occur, provi sion is made for braking the driven clutch half 29 as it is thus drawn outwardly for disengagement with its driving half 23. To this end, an annular brake shoe surrounds the periphery of the driven clutch half 29 but is normally out of contact therewith during the period of rotation of said half 29. However, when this half is drawn outwardly for disengagement, its periphery engages with the' brake shoe '70, the inclination of same being at the proper angle to effect the desired braking action, and further rotation of the driven clutch half is immediately stopped.

The brake shoe [0 may conveniently be mounted upon bracket members 71; and the shoe is prevented from turning with reference to the brackets by bosses 72 fitting in ways 73 of the brackets. Moreover, a spring '74 is mounted between projections 75 of the'brackets and the shoe element to urge the latter in the direction of the clutch half 28 in order to take up for wear of the said shoe. Pins 76 extending radially inwardly from brackets 71 into slots '77 of brake band '70 serve to limit the longitudinal movement of the band.

When it is desired to release the pressure on the matrix, after the desired elapsed drying period, rocker arm 55 is arranged to be raised sum-- ciently to permit the roller 57 to be returned to its normal position under the action of the clutch spring 61' and permitting thereby the said arm 55 to return to a position in which the clutch halves 28 and 29 may reengage. This may be effected, for example, through a foot pedal 55' operating through intermediate levers and link.- ages to rock the shaft 65 and thus operate its attached rocker arm 55' accordingly.

' The rotation of the gear wheels 32, 33 continues until the head or platen assumes substantially its uppermost position, as indicated in Figs.

2, 3 and 5 of the drawings and in which position the crank pin 41 is substantially at its lowermost point of travel. A further cam roller 80 is to this end secured to a gear wheel 32'or 33 as upon a pivoted arm 81 attached to the surface thereof, said arm being urged by means of the spring 82 in the direction of rotation of said gear wheel and limited in this direction by means of a stop 33 and in the opposite direction by means of a stop 84. When this latter cam roller 86 then engagesthe nose 56 of rocker arm 55, the clutch 71 halves 28 and 29 willagain be separated and the press brought to a standstill. The operation of the press is restored by depressing the foot pedal 55' after a new stock of matrix material with form has been inserted into the press.

For conveniently inserting such mat with form, a carriage member 90 is provided to receive the same, and the form is preliminarily supported on a laterally disposed table 91 provided with elec. trical heating elements 92 so that it may be All brought. to the desired: temperammer externally; oil the. machine. and duringthe period: that. am im. pnessech mat. on matrix; is; drying and unden pres;-- slme: within the press; At. the. opposite side, of the machine, a. further: and deiiveny table 93. may be. provided: to receivejthemfinished. main-ix after thesame, has. been. withnlrawn from. press. 'Whem nearly for. entity. into. the press; carriage is. brought over a further table portion; 914; mm; oil the press-portion of the machine: constituted by a plurality: of longitudinally dis posed nollers' upon which: thi'sxcarriagelis adapt.-- ed to: ride and be directed? into-the press position between the: bed plate 54: thereof and; the head or platen 34. Moreover, in thus directing. the car-- riage with its materialinto the press proper, a limit stop in the natureof a spring-urgedabutment plunger 97 i's provided in the: wall of'a covor member 98: atone side of the pressirame fol: engagement-withthe carrier plate. or. carriage 90; for-the form and mat to be operated. on 'within: the pres'sfand a spring-urged: latch 99 drops beh nd the outer end of the carriage to insure its position in the press when the head descends.

Furthermore, when. withdrawing the carriage and in order to limit its outward movement, the underside of the carriage is notched as at 99' to receive a spring-pressed pin 1001 which snaps. therein to lock carriageinits withdrawn position for. unloading reloading when it is desired to again. return the carriage; pin; 1:00, iswithdraw-nfrom the notch 99 through the op-- oration o! a release'lever IOI piyotallywattachect to the pin. the carriage 90-leaves. the rollers 96 on enteringthepressptoper', it is. received upon further rollers 1 65 carried by brackets 1'06 located upon the movable straps or connecting membore 35 transmitting the reciprocatosy. motion, from the toggle tov the head 34..

The. position of the uppermost. level: of these rollers is: such. that when the'heaad: 34: is also in its uppermost position, the periphery of the rollers will? receive the carriage: 9.0. to locate. the. same over the bed plate 5.4. However," as thapresslmeaddescends, the rollers more: downwardly therewith, leaving the carriage resting: solely uponthe bedplate 54,. the head at pressing". their upon the mat and. form as; said; head furtherdescends;

Beneath. the. bed: plate 5.4 is also arranged: a. succession of longitudinally disposed electricat heating units connected togetherat their outer'end's. by means: of a. strap 111* to which elec-- trical connection may be made in any convenient mannerto. energize; all of: these in parallel. case one or more of the saict should: be.

' comedefective aindzrequire replacement. it would;

ordinarily, be necessary M811! remove the very-little space i'safliorded between the bed plateand head of the press, is not such a simple: procedure. 5

Provision thereforelmade for raising the. up; per portionor bed plate 5'4 wiithreierence-to its support, for example, to. the position indicated in=' dotted lines, Fig. 9. To this end, adjustable-bolts: 112 are provided to thread through the. said support and have. their innerends engaging the bottom surface. of thesbed plate and jaackmp. the same, a lock not 1113: being associated with a. bolt. to fix it in position utilized for the. bed plateasaforesaid. By thus eiTecting-a separation. between a. plate and its. support, a unit 1I0=is rendered. accessible amimyreadily-bez drawn out. of its groove or pocket. after first;

ensuring. the: strap 1:11,. and-1a; new: unit. substituted. Screws-1:14; normally secure the; bed plate in its depressed positiom amt must.,. of course. finst Del-loosened betore. attemptin to jack:uprthe upper: portion. 54 or: bed plate. v

' Furthermore, the: 130118138. 9imaybeadjusted relativelyrjto. table. 9k for: levelling the carriage 90 asitfposses thereovenandato this are carriedby a. bifurcatedhraclsetzmfi, Fig. 10:,;pivotedztothe: tab e"; his bracket. beingalso adaptedto be rigidly to; the. table asby boltsrllfic when these boltsare loosened: a; roller maybe-rocked; relatively to thetahlezbm theeadjustn mnt. 'ofiset screws: 11'? passingthrough. thebase-of a. bracket and-working against. the: table-:surface; When the desired. position of a roller is attained, bolts 116 are clam-peril to fixithe location. Moreover; thextablezas a. whole also bra-adjusted relatively to. the machine frame: to; correct. inaccuracies oi construction as by'sec'uning; the said; table. to. lateral-supports 1 20 oil the press frame. through; bolts: 12L, set screws. L22: passing alsathroughthetable and abutting the supports.. By coizrcspondingl'y adjusting; those set screws, the dESiI'EdllBVEl. of-the table; may: be accused, whereupon; the. bolts 12]; are tightened.

1 DI-1' a machine for making stereotype matrices and including a. stationa-ny' platen, a. movable platen, means for reciprocating-the. latter, and means for: releasing: slightlythepressure of the movalzilee platen upon a matrix ant'iefriction, members affording. a supportrbefiore: the: platens, a carriage movable thereoyer: between. the stationary: and movable platens; andanti-triction supporting members: movable with the movable platen and adapted to: receive: the'carria-ge from theailoresaid anti-friction supporting members.

2.. In. a. machine for making: stereotypenmatrices. and including a. stationary platen, a movable platen, means for reciprocating the latter, and

means: releasing-slightly the pressure of the movable platen upon: a matrix; anti-imitation mom-- has aiilor'dingra support beforethev platens, a carriage-.moslable thereover between the. stationary and: movable platens, anda heated; table adjacent i the said. anti-friction supporting members.

In. a machine formak-ing stereotype matrices and including a stationary platen, a movable platen, means for reciprocating the latter, and

means for releasing slightly the pressure of the movablo-plaltenupon a matrix; anti-friction membersafiording a support before the platens, a carriage movable. thereover between the stationaryand movable platens, a heatedtablo adjacent the.

solid v anti-friction supporting members and a delivery table upon the-. opposite side of the antifiriotion supporting member.

4'. In a machine for making stereotype matrices and including a -stationary platen; a.v movable platen, means for reciprocating the latter, and

means for releasingslightliy the pressure of the movable. platen upon a. matrix; anti-friction members affording, a support before the platens,

a carriagev movable thereover between the'stationerrand movable platens, anti-iricti'on supporting, members. movable with the movable platen and adapted to receiy'ethe carriage from the aforesaid anti-friction supporting members, and means to adjust the. lieyelof the first-named anti-friction supporting'members.

5.. Jim-a1 machineifor making stereotype matrices, a stationary platen. amovable platen, means. for reciprocating, sairllmovable platen, means for slightly releasing the pressure of the movable platenupon a. and. means. for

drying the matrix comprising electrical heating elements mounted in one of the platens.

6. In a machine for making stereotype matrices, a stationary platen, means-for reciprocat ing said movable platen, a movable platen, means for slightly releasing the pressure of the movable platen upon :a matrix, and means for dryingthe matrix comprising electrical heating elements mounted in the stationary platen.-. r

'7. In a machine for making stereotype matrices, a stationary platen including a support therefor, a movable platen, means for reciprocating said movable platen and means for drying the matrix comprising electrical heatingelements slidably supported in the stationary platen support.

. 8. In a machine for making stereotype matrices, a stationary platen including 'a support therefor, a movable platen, means for reciprocating said movable platen, means forv slightly re-v leasing the pressure of the movable platen upon a matrix, and means for drying the matrix comprising. electrical heating elements detachably mounted inthe stationary platen support. 1

9. In a machine for making stereotype mat-. rices, a stationary platen including a support therefor, a movable platen, means for reciprocating said movable platen, means forslightly releasing the pressure of the movable platen upon a matrix, and meansfor drying the matrix comprising electrical heating elements mounted in the stationary platen support.

10. In a machine for making stereotype matrices, a stationary platen including a support therefor, having a groove formed therein, a movable platen, means for reciprocating said movable platen and means for drying the matrix comprising an electrical heating element slidably mounted in the groove formed in the support for the stationary platen.

able platen, means for slightly releasing the pres sure of the movable platen upon a matrix, and means for drying the matrix comprising an electrical heating element slidably mounted in the groove formed in the support for the stationary platen. a r

12. A -machine for making stereotype matrices, including a stationary platen, a movable platen and means for reciprocating the movable platen to apply pressure to a matrix, a support member for the matrix'and form from which an impression is to be made, said support being movable into and out of position between the platens and means for drying the matrix while it is subject to pressure between the platens, comprising electrical heating elements slidably supported in one of the platens.

13. 'A machine for making stereotype matrices, includingastationary platen, a movable platen and means for reciprocating the movable platen to apply pressure to a matrix, a support member for the matrix and form from which an impression is to be made, said support being movable into and out of positionbetween the platens and means for drying the matrix while it is subject to pressure between the platens, comprisingand means for reciprocating the movable platen:

to applypressure to'a matrix, means for drying a matrix while it is subjectto pressure between the. platens, comprising electrical heating ele-. ments mounted in one-of the platens and means for slightly releasingthe pressure of the movable platen upon a matrix, whereby molding and drying of the, matrix is'effected simultaneously.

l5; In a machine for making stereotype matrices, including-a stationary platen, a'movable platen and means for reciprocating the movable platen to apply pressure to a matrix, the combination of'means fordrying a matrix while it is subject to. pressure and means for. slightly releasing the pressure of the movable platen upon amatrix, whereby molding and drying of the matrix is eifected simultaneously- 16'. In a machine for making stereotype matrices, including a stationary platen, a movable platen and means for-reciprocating the movable platen 'to apply pressure toa matrix, the combination of a support member for the matrix and form from which an impression is to made; said support being movable into and out of position between theplatens, meanstfor drying amatrix while it is subject to pressure, and means for slightly releasing. the pressure of the movable platen upon amatrixwhereby molding and-dry; ing of the matrix is effected simultaneously.

17. In a machine for making stereotype matrices, including ,a stationary? platen, a movable platen and'means for reciprocating the movable platen to apply pressure to a matrix,'a support member for the matrix and form from which an impression is to be made,'said support being movable into and out of position between the platens, means for drying a matrix while it is subject to pressure comprising an electrical heating element mounted in one of the platens and means for slightly releasing the pressure of the movable platen upon a matrix, whereby molding and drying of the matrix is effected simultaneously.

18. A machine for making stereotype matrices, including a stationary'platen, a movable a carriage movable thereover between the stationary and movable platens','said carriagebeing adapted to support a matrix and form from which an impression-is to be made, and means for drying the matrix while it is subject to pressure between the platens, comprising electrical heating elements slidably supported in one of the platens.

' 19. A machine for making stereotype 'matrices, including astationary' platen, a movable platen, and means for reciprocating the movable platen to apply pressure to a matrix, anti friction members affording a support before the platens, a carriage movable thereover between the stationary and movable platens-said carriage being 'adaptedto support a matrix and form from which an impression is to be made, and means for drying the matrix nwhile it is subject to pressure between the platens, comprising electrical heating'elements slidably supported inthe stationary platen. I

.20.- A machine for making stereotype matrices, including a stationary platen, a movable platen and means for reciprocating the movable platen to' apply pressure to a-matrix, means for i movable platens, said carriage being adapted'te support a matrix and form from which an impression is to be made .and means for drying "the matrix while it is subject itO pressure between the platens, comprising electrical heating elements mounted in one of the platens.

21. .A machine for making stereotype matrices, including a stationary platen, a movable platen and means for reciprocating the movable platen to apply pressure to a matrix, means for slightly releasing the pressure of the movable platen upon a matrix, anti-friction membersaffording a support before the platens, .a carriage movable thereover between the stationary and movable platens, said carriage :being adapted to support a matrix and form from which an impression is to be made and means fordrying the matrix while it is subject to pressure betweenithe platens, comprising electrical heating elements mounted in the stationary platen.

22. A machine for making stereotype smatrices, including a stationary platen, a movable platen and means for reciprocating the :movable platen to apply pressure to a matrix, anti-friction members afiording a support before the platens, a carriage movable thereover between the stationary and .movable platens, said carriage being adapted to support a matrix andform from which an impression is to be made, anti-friction supporting members movable with the movable platen and adapted to receive the carriage from the first mentioned anti-friction supporting members and meansfor drying-thematrix while it is subject to pressure between the platens, comprising electrical heating elements in one of the platens.

23. A machine for making stereotype -mat- 'rices, including a stationary platen, a movable platen and means for reciprocating the movable platen to apply pressure to 'a matrix, anti-friction members affording a support before the platens, a carriage movable thereover between the stationary and movable platens, said'carriage being adapted to support a matrix and form from which .an impression is to be :made, antifriction supporting members movable with the movable platen and adapted to receive the carriage from the first-mentioned anti-friction supporting members and :means .for drying thematrix while it is subject to pressure between the platens, comprising electrical heating elements mounted in thestationary platen.

24. Azmachine for-making stereotype matrices, including .a stationary platen, amovable platen and means for-reciprocating the movable platen to apply pressure toarmatrix, :means for slightly releasing 'the pressure of the movableplaten upon amatrix, anti-friction members affording asupport before the platens, a carriage movable thereover between the stationary and movable platens, said carriage-being adapted to support a matrix and form from which an impression is to be made, anti-friction supporting members movable with the 'movable platen and adapted to receive the carriage from the first -mentioned anti-friction supporting members and means for drying the 'matrix while it is subject to pressure between the platens, comprising electrical :heating elementsmounted in one of the platens.

,25. Armachinefor making stereotype matrices,

including a stationary platen, :a ;movable platen and means'forreciprocatingrthe movable platen :to apply pressure to amatrix, means-for slightly ireleasing the pressure ofthe movable platen upon a matrix, anti-friction members affording a supportbeforethe platens, a carriage movable bers affording a support before theplatens,.a carriage movable thereover between the stationary and movable platens, said carriage :being adapted to support a matrix and form from whichlan impression is to be made, a heated table adjacent .Slitid anti-friction supporting members, :for preliminarily heating the vmatrix before molding, and means for drying-the matrix while it :is subject to pressure between the platens comprising electrical heating elements mounted in :one of the platens.

:27. .A machine for making stereotype matrices, including a stationary platen, a movable :platen .and means for reciprocating the movable platen toapply pressure to amatrix, l-anti-efrictionmembers affording a supportbefore the :platenaacarrlage movable thereover between the stationary and movable platens, said carriage :being adapted :tosupport a matrix and form from which an impression is to be made, a heated table adjacent said anti-friction supporting members for preliminarily heating the :matrix before :molding, and means for drying the :matrix while .it issubject to pressure between the p1atens.comprising electrical heating elements mounted in the stationary platen.

28. A machine for .making stereotype :matrices, includingastationary platen, a :movable :platen ::and :means for reciprocating :the movable aplaten to apply pressure to a'matrix, means iforslightly releasing the pressureof themovableplatemupon a matrix, anti-friction :members affording a support before the platens, a carriage movable thereover "between the stationary and movable platens, said carriage being adapted :to suDDOrt a matrix and form from which an impression is to -bemade, a heated table adjacent said .anti-friction supporting members for preliminarily heating the matrix before molding, and means for drying the matrix'while it issubjectrto pressure between the platens-comprising electrical heating elements mounted in one of the platens.

, :29. A machineifor makingstereotype matrices, including a stationary platen, -a movable :platen and means for reciprocating the movable .platen to applypressure to a matrix, means for slightly releasingvthe pressure of the movablel-platen upon :a :matrix, anti-"friction members I affording a-'support before the platens, acarriage movable thereover between the stationary and movable platens, said carriage being adapted to support a matrix and form from which an impression is to be made, a heated table adjacent said antifriction supporting members for "preliminarily heating the matrix before molding, and means for drying the matrix while it is subjectto pressure between the platens comprising electrical *heating elements mounted in the stationary platen.

30. Amachine formaking'stereotype matrices, includinga stationary "platen, a movable platen and means for reciprocating the movable platen to apply pressure to a matrix, means for slightly a heated table adjacent said anti-friction supporting members for preliminarily heating the matrix before molding, anti-friction supporting members movable with the movable platen and adapted to receive the carriage from the first mentioned anti-friction supporting members and means for drying the matrix while it is subject to pressure between the platens, comprising electrical heating elements mounted in one of the platens.

31. A machine for making stereotype matrices, including a stationary platen, a movable platen and means for reciprocating the movable platen to apply pressure to a matrix, means for slightly releasing the pressure of the movable platen upon a matrix, anti-friction members affording a support before the platens, a carriage movable thereover between the stationary and movable platens, said carriage being adapted to support a matrix and form from which an impression is to be made, a heated table adjacent said anti-friction supporting members for preliminarily heating the matrix before molding, anti-friction supporting members movable with the movable platen and adapted to receive the carriage from the first mentioned anti-friction supporting members and the platens, said carriage being adapted to support a matrix and form from which an impression is to be made, and means for drying the matrix while it is subject to pressure between the platens, comprising electrical heating elements slidably supported in one of the platens.

33. A machine for making stereotype matrices, including a stationary platen, a movable platen and means for reciprocating the movable platen to apply pressure to a matrix, means for slightly releasing the pressure of the movable platen upon a matrix, anti-friction members affording a support before the platens, a carriage movable there- -over between the stationary and movable platens,

means to lock the carriage against withdrawal .when located between the platens, said carriage being adapted to support a matrix and form from which an impression is to be made and means for drying the matrix while it is subject to pressure between the platens, comprising electrical heating elements mounted in one of the platens.

34. A machine for making stereotype matrices, including a stationary platen, a movable platen and means for reciprocating the movable platen to apply pressure to a matrix, anti-friction members affording a support before the platens, a

carriage movable thereover between the stationary and movable platens, means to lock the carriage against withdrawal when located between the platens, said carriage being adapted to support a matrix and form from which an impressionis to bemade, anti-friction supportng members movable with the movable platen and adapted to receive the carriage from the first mentioned anti-friction supporting members and means for drying the matrix while it is subject to pressure between the platens, comprising electrical heating elements mounted in one of the platens.

35. A machine for making stereotype matrices, including a stationary platen, a movableplaten and means for reciprocating the movable platen to apply pressure to a matrix, means for slightly releasing the pressure of the movable platen upon a matrix, anti-friction members affording a support before the platens, a carriage movable thereover between thestationary and movable platens, means to lock the carriage against withdrawal when located between the platens, said carriage being adapted to support a matrix and form from which an impression is to be made, anti-friction supporting members movable with the movable platen and adapted to receive the carriage from the first mentioned anti-friction supporting members and means for drying the matrix while it is subject to pressure between the platens, comprising electrical heating elements mounted in one of the platens.

. 36. A machine for making stereotype matrices, including a stationary platen, a movable platen and means for reciprocating the movable platen to apply pressure to a matrix, anti-friction members affording a support before the platens, a carriage movable thereover between the stationary and movable platens, means to lock the carriage against withdrawal when located between'the platens, said carriage being adapted to support a matrix and form from which an impression is to be made, a heated table adjacent. said antifriction supporting members for preliminarily heating the matrix before molding, and means for drying the matrix while it is subject to pressure between the platens comprising electrical heating elements mounted in one of the platens.

37. A machine for making stereotype matrices, including a stationary platen, a movable platen and means for reciprocating the movable platen to apply pressure to a matrix, anti-friction members affording a support before the platens, a carriage movable thereover between the stationary and movable platens, said carriage being adapted to support a matrix and form from which an impression is to be made, a heated table adjacent said anti-friction supporting members for preliminarily heating the matrix before molding, a delivery table upon the opposite side of the antifriction supporting members and means for drying the matrix while it is subject to pressure between the platens comprising electrical heating elements mounted in one of the platens.

38. A machine for making stereotype matrices, including a stationary platen, a movable platen and means for reciprocating the movable platen to apply pressure to a matrix, means for slightly releasing the pressure of the movable platen upon a matrix, anti-friction members affording a support before the platens, a carriage movable thereover between the stationary and movable platens, said carriage being adapted to support a matrix and form from which an impression is to be made, a heated table adjacent said antifriction supporting members for preliminarily heating the matrix before molding, a delivery table upon the opposite side of the anti-friction supporting members and means for drying the matrix while it is subject to pressure between the platens comprising electrical heating elements mounted in one of the platens.

39. In a machine for making stereotype matrices, a stationary platen including a support therefor, a movable platen, means for reciprocating said movable platen, means for slightly releasing the pressure of the movable platen upon a matrix, means for drying the matrix comprising electrical heating elements mounted in the stationary platen support and means to displace the stationary platen relatively to its support to permit access tothe heating units.

40. In a machine for making stereotype matrices, a stationary platen including a support therefor, having a groove formed therein, a movable platen, means for reciprocating said movable platen, means for drying the matrix comprising an electrical heating element slidably mounted in the groove formed in the stationary platen support and means todisplace the stationary platen relatively to its support to permit access to the heating units.

41. In a machine for making stereotype matrices, a stationary platen including a support therefor, having a groove formed therein, a movable platen, means for reciprocating said movable platen, means for slightly releasing the pressure of the movable platen upon a matrix, means for drying the matrix comprising an electrical heating element slidably mounted in the groove formed in the stationary platen support, and means to displace the stationary platen relatively to its support to permit access to the heating units.

42. A machine for making stereotype matrices, including a stationary platen, a movable platen and means for reciprocating the movable platen to apply pressure to a matrix, means for drying a matrix while it is subject to pressure between the platens, comprising electrical heating elements mounted in one of the platens, and means for automatically partially releasing the pressure upon a matrix during the drying period, whereby molding and drying of the matrix is efiected simultaneously.

43. A machine for making stereotype matrices, including a stationary platen, a movable platen and means for reciprocating the movable platen to apply pressure to a matrix, means for drying a matrix while it is subject to pressure between the platens, comprising electrical heating elements mounted in one of the platens, and means operable at a predetermined time during the drying period for partially releasing the pressure upon a matrix, whereby molding and drying of the matrix is efiected simultaneously.

44. In a machine for making stereotype matrices, including a stationary platen, a movable platen and means for reciprocating the movable platen to apply pressure to a matrix, the combination of a support member for the matrix and form from which an impression is to be made, said support being movable into and out of position between the platens, means for drying the matrix while it is subject to pressure and means for automatically partially releasing the pressure upon a matrix during the drying period, whereby molding and drying of the matrix is efiected si multaneously.

45. In a machine for making stereotype matrices, including a stationary platen, a movable platen and means for reciprocating themovable platen to apply pressure to a matrix, the combination of a support member for the matrix and form from which an impression is to be made, said support being movable into and out of position between the platens, means for drying the matrix while it is subject to pressure and means operable at a predetermined time during the drying period for partially releasing the pressure upon a matrix, whereby molding and drying of the matrix is eifected simultaneously.

DAVID H. FLEMING. 

